Trolley pole



Feb. 23, 1932.

F. FIRM, JR

TROLLEY POLE Filed July, 22, 1931 jwmvlwrm, J1.

@m6 v v lNvENToR ATTORNEY Feb. 23, 1932. F. FIRM, JR '1,847,902

TROLLEY POLE Filed July 22, 1951 2 Sheets-Sheet 2 Figa .2.

l le 6 7 n Frank Firm, 052

INVENTOR a 2 ATTORNEY Patented Feb. 23, 1932 fuNlTED-srarss earrRANKfrmi/i, in., or KLEIN, MONTANA anonima roms Application mea rJulyas, 1931. serial Naam/iss. I

constructed that in the event that the trolley wheelshouldi leave theAoverhead lwire and strike the roof of the tunnel orV the roof timebers, the pole sections may swing with relation to each otherwherebyfthe wheelwill not be damagedby being held tightly' against, thetunnel roof or the timbers. :The sectionsof gether in such manner thatthat sect-ion Vwhich carries the trolley wheel may swing in either oftwo directionsand thus the wheel will not beA damaged if the motorisfproceedin'g 'in a forward direction or isi backingin the tunnel.

With thisobject in view the ktrolley. pole includes'upper and lowerpoleA sections, the up- -per section being provided `with the usualtrolley wheel and the `lower polev section f adapted 4to 'bepivotallyconnected kwith the Vmotor in a usual manner.

\ of the intermediate bar fits snuglyagainst the side wall of the recessofthe other bar section. Pivot members connect the` intermediate; barwith the bar Vsections at points between the endsof the recesses thereofand springs are connected at theirinner ends with the` intermediate barand at their outer ends with the' bar sections and the said springs aredisposed transversely across said pivot members. y

In the accompanying drawings :-V

Figure lis a side elevational view showing the trolleypoles in heavylines and therelative position of the parts when the wheel is in contactwith the overheadiwire and thermocut on the line -Zlof Figure 2.

.on'the line 6-76 of Figure 2. the, trolley pole are` pivotallyconnected` to-` Y p .of the tunnel is indicated at l, thefrooftimhangersin a usualmanner.

Bar sections are f ,Cates in dotted lines the relative positions of vtheparts when the wheel leaves the overhead wirev and themotor is moving ina forward di frection and also whenethe motor fis backing.

Y Figure 2 is aside elevationalview of the intermediate bar and barsections.

Figure 8 is a similar view ltheviewshown in Figure 2. ,Y Y

Figure is a-horizontalv sectionalfview at right angles to Figure yisatransverse sectional on the line -pof-:Figure Y F gure 6 is a transversesectional view vcut view :cut

In the accompanying drawings the' `V`roof bers at 2-,and theoverhead.wire at.;A The wire 3 is', supported Afrom the timbers by OneY hangeris indicated at 4. i' 1 4The trolley pole consists of an upperfsection`5 having a :wheel 6 journaled Iat the upper end thereof in'a VVusualmanner `and Y adapted to travel normally uponlythe overhead wire 3. VAferrule Z is :connected .with the lower endof thev upper section 5. Thepole also includes a lower pole section 8. The section 8 is connectedwith the motor V(not'shown) in a usual manner and the said section 8 isunder the influence of a spring (also not shown) as is thefcommonpractice.` Barsections 9 andv l0 are connected with Vthe pole section'sjand 8 respectively, the bar section 9 being connectedfwith the polesection 5 through the ferrule 7. vThe bar sec- Vtions 9 and l()haveangularly disposedend portions as best shown and indicated in Fig-Aure 2 of the drawings. The, bar. sections 9 and l0 are provided atAtheir sides withrecesses 11 leading in fromv the ends thereof.. Theinner end walls of the recesses 11 are inclined as at 12. .The outervends of thefbar section are inclined as at 13, theV ends 123 areinclined in an opposite/direction from the inclination ofthe end walls12.

An intermediate barl Mis provided at its opposite ends and at oppositeVsides with recesses 15 and the inner wall surfaces of the l recessesAl5 fits-snugly against thel side wall surfacesof the recesses l1 of thelbars 9 and l0 respectively. The end portions of the intermediate bar 14are angularly disposed.

with 'relation to the intermediate portion thereof as best indicated inFigure 2 of the` drawings.

' Spring clamps 17 arercarried at the ends of the bar 14 and theendsofffthe bar sec- ,tions 9 and 1() and the clamps which are carriedby the bar vare Vadapted-to engage around the -bar sections while theclamps which are Icarried by the'jbarsections are adapted to 'engagearoundthe bar as best shown in Figures 'and 6 of vthe drawings.

Each clamp member 17 vis provided with a 4seat 1:18. Springs 19areconnected atfftheir `inner ends with the-bar 14- and connected attheir fouter-en'ds with the pole v'sections .and

- 8 respectively. Theintermediate'portion'of the-springs 19 arekreceived within the seatv18 as best indicated Figure 2 of lthe draw-`When the trolley'pole is moving-in afor- -rward'direction Vorbacking.andthewheel 6 isin contact with thewire KV3 the-parts will *bein position as shown in heavy lines'in Figure V1 of the drawings; Shouldthe lpole be;4 going ina forward' direction andthe `wheel 6 leave thewire 3 the parts -will assume A'the y *positions asshown in dotted linesrat the left "in Figurel. Should "the trolley pole-be 'backing and theVfwheelV leave the wirefthe Y ,parts will assume "thejpos-itions yasshown-in rdotted' 'lines at the right'in Figure l1'.

'Having described the invention What is `claimed vis.

Y A trolley pole com'prising'upperand lower `pole sections, Akbar"sections attached to :n Htheends of the polesections,-sa-idbar:sections "having recesses at theirsides,an'intermediate bar provided at its oppositeiends'andatoppo-- siteysides with recesses, the 'side -wa'll of 'one recess of theint'ermediate `bar fitting snugly f l [against the side wall bf therecess of one-bar section, the sidewall-of the/other recess or" ftheintermed-iate bar fitting @snugly aga-inst lthe/side wall ofthevrecessof'the otherfbar section, pivot -ine'mbers v'connecting the interfmediate barwith the bar sections atfpoints 'j lbetween the yends of 'therecesses thereof,- and springs connected with the intermediate bar andthebarsections and disposed transversely across said pivot members.

2. A trol-ley pole comprising iipper'and J'lowerpolesections,Abar'sectionsattached to 'the ends of 'thepole sections,saidbarsections fhavin'g recesses atftlieirsides, an'iz'itermediate y n,-barp'rovided atitslopposite'ends andat'oppo# "5" *site sides :withrecesses,the side Wall of-'one recess of the intermediate bar ittingsnugly against theside wall of the recess oi'one bar section, the sidewall of the other recess of the intermediate bar fitting snugly againstthe side wall of the recess of the other bar section, pivot membersconnecting the intermediate bar with the bar sectionsat points betweenthe Iends of the recesses thereof, :andsprings connected with theintermediate bar and thebar sections and disposed transverselyacrosssaid pivot members and the bar sections and inter-mediate barhaving angularly disposed end portions.- Y n' 3.Y A trolley -polecomprising upper and lower pole sections, bar sections attached to theends of the lpole sections', sai'dbar sections having-recesses at theirsides,:an intermediate bar provided at its opposite ends andatsofpposite sides with recesses, the sidewall of fone Y recess of the`intermediate :bar fttin'g .snugly l f 'against the sidewall-oftherecessofonebar s section, the side walloftheoth'er recessofthe intermediate bar fitti-ngfsnuglylagainst-ihe sidewall ofthe recess'of theotlier-bar sectioin` v ipivot members connecting :theintermediate bar with the Ybarsectionsatnpoints'bettiieen f s fthe vendsofthe recesses thereoiiand springs connected with the intermediate:bai-zand the bar sections and disposed 1',i."aii'sverselyacross saidpivot members .and .the :recesses sof :the '-U' bar 'sections VAandintermediate ibar fand the ends :of thefbarlsections and V.intermediatev=bar.havinglin'clin'ed-surfaces; w

singulpper' and lower pole sections,l barfse'ctions .attached ftofthe-endsotthe pole sections, 'said barsections l 4. I,A trolley .poleYAcom-pri having recesses attheir sides, an intermediate bar 'fprovidedatitsoppositeiends and fat'oppositesideswith recesses, the sidewall-.fofVfone recess lof .the 4intermediate bar {iitting vsnu'gly* f against 'theside Wallofatheire'cess ozf one bar section, `the-,side -vwall f of..the 'other recess of the intermediate bar 2itting-.snugly-against fthesidek wall of the recess :of lthe .other 'bar section, .pivot lmembers:connecting theinten' mediate barwithLthe'ibarfsections'atlpointstbetween the ends of `the:recessesthereoL-fand- Vsprings :connected -with A:the intermediate :barvandfthefbar sectionsand disposedtra'nsversely y across said pivotlnmembers' and spring clamped `:members carried `by the 'barsand .the

bar sections, `the clamp. members acarried by the bar adaptedto engagethe bar. sectionsfaiid the c lainp'members carried bythe bar'sectionsadapted to-engagethebar.

' 5.- A trolley'fpole :comprising upper',fand` lower pole sections, barsections :attached-.to the ends of the ipole sections, saidbarsectionshaving'recesses attheir sides,- an. intermediate bar-provided atitsopposite/ends andfat oppo site sides Vfwithrecesses,the-sidewallz'ofroneVK recess of the .intermediatebar :'.fittingysnuglyjagainst Lthe side wall vofthe recess otone bar section, the side wall'of the other recess :ci

sin

the side Wall of the recess of the other barv section, pivot membersconnecting the intermediate bar with the bar sections at points betweenthe ends of the recesses thereof, and springs connected with theintermediate bar and the bar sections-anddisposed transversely acrosssaid pivot members and clamp members carried by the bar and bar sectionssaid clamp members having seats receiving said springs.

In testimony whereof I affix my signature.

FRANK FIRM, Jn.

